Table 1 Characteristics of the volcanic ash layers in the Lake Van sediments.

From: Volcanic impact on terrestrial and aquatic ecosystems in the Eastern Mediterranean

Ash layer

Age (ka BP)

Max. tephra thickness (cm)

 

Core section

Section depth (m)

Composite depth (mcblf)25

Lithotypes34

Varve-years

Mean SR (cm yr−1)

MIS

Source / Event

V-18a

32.7 ± 2.5

274.9

above

5034/2D/5H/1

0.819–0.878

14.727–14.786

Laminated clayey silt (Ll)

76

0.08

3

Nemrut Formation (NF)27

beneath

5034/2D/6H/1

0.683–0.740

17.980–18.037

Faint laminated clayey silt (Lf)

57

0.11

V-20

~33.2

2.5

beneath

5034/2D/6H/2

0.067–0.105

18.224–18.263

Laminated clayey silt (Ll)

103

0.04

V-60

~81.5

203.0

above

5034/2D/12H/2

0.316–0.390

36.847–36.921

Laminated clayey silt intercalated with graded beds (LlLg)

44

0.23

5a

İncekaya-Dibekli26,27,41 (HP-5)

beneath

5034/2D/13H/1

0.907–0.960

39.103–39.156

45

0.19

V-176

220.4 ± 6.9

35.0

above

5034/2D/37 A/1

0.900–1.020

106.790–106.910

Laminated clayey silt to fine ash intercalated with graded beds (LlLg)

55

0.34

7d

Nemrut (?)27

beneath

5034/2D/38 A/1

0.125–0.185

107.236–107.296

67

0.15

V-233a

~321.1

4.2

above

5034/2D/45 A/1

1.175–1.224

142.169–142.218

Faint laminated clayey silt to sand and banded clayey silt intercalated with graded beds (LfLg to LbLg)

90

0.15

9d

Nemrut (?)38

beneath

1.265–1.314

142.268–142.317

31

0.26

V-237

~334.5

18.0

above

5034/2 F/11 A/1

0.000–0.070

144.429–144.499

Laminated clayey silt (Ll)

129

0.06

9e

Nemrut (?)38

beneath

5034/2D/46 A/1

0.978–1.050

144.607–144.679

Laminated clayey silt to clayey silt (Ll)

108

0.09

  1. Indicated are the five selected ash deposits V-18a, V-60, V-176, V-233a, and V-237, including age (ka BP), maximum tephra thickness, sampled core sections, lithotypes, studied interval in varve-years, and potentially source of volcaniclastic deposit. Mcblf: meter composite below lake floor. SR Sedimentation rate (cm yr−1), MIS Marine Isotope Stages67.